New reports are surfacing about Kristen Stewart and Robert Pattinson's recent break-up, and we must admit we're baffled.

The Sun is reporting that Rob ended things with Kristen after finding a text messages from her former fling Rupert Sanders. Ugh.

What makes matters worse is that Rob found the text message exchange between Kristen and Rupert on his birthday because he was trying to plan a cute surprise for Kristen. Double ugh.

Just to refresh your memory, Rupert is the Snow White and the Hunstman director whom Kristen cheated on Rob with last summer.

"Rob was looking at her phone on the morning of his birthday, as he wanted to take a picture of something when she was in the shower," a source reveals.

"Suddenly, this message flashes up, and it’s not what he wanted to see," the insider continues. "He got straight up and left. Despite Kristen’s pleas, he told her not to come to his birthday party at a friend’s that night."

It appears that finding the text exchange was the final straw for Rob.

"He’s extremely angry and upset," says the source. "No matter how many times she calls or texts, friends say he’s had enough. After everything that happened and the hurt she caused, he’s furious she’d be back in touch with him, even if she is saying it’s completely innocent.”

Wow — crazy, right? If this is indeed true, we can't imagine why Kristen would want to have any contact with Rupert. Basically, we just want to give Rob a hug right now.

And if rumors are to be believed, Rob apparently is already beginning to flirt with other girls

Long story short: Why can't Rupert just leave Kristen alone?? Go away, dude!

Source: The Sun